FRISCO, Texas (AP) Two-time All-Pro right guard Zack Martin missed the first session of the Dallas Cowboys' voluntary offseason practices and wasn't expected to take part Wednesday while working on a contract extension.

Martin, an All-Pro in 2014 and 2016, was on site doing off-field work Tuesday.

Martin is in the fifth year of his rookie contract at a salary of $9.4 million. The Cowboys drafted him out of Notre Dame with the 16th overall pick in 2014. He has started all 67 games in the regular season and playoffs for the Cowboys.

"He's one of the best players we have," Cowboys coach Jason Garrett said. "He represents everything we want. We want him to be here for a long, long time. But there's a business side to this, and we all understand that."

Andrew Norwell, an All-Pro last season for the Carolina Panthers, signed a five-year contract in March with the Jacksonville Jaguars for $66 million.